X

X-Axis

The longitudinal axis around which a vehicle structure rolls from side to side.

X-Chassis

A conventional chassis design, used until the late 1960s, which narrows in the center, giving the vehicle a rigid structure that is designed to withstand a high degree of twist having a heavy front cross member to support the upper and lower suspension control arms and coil springs.

X-Drilled crank

A term used for X-drilled crankshaft.

X-Drilled crankshaft

A crankshaft having two oil passages at approximately 90 degrees apart in the main journals.

X-Frame

A term used for X-chassis.

X-Member

An X-shaped reinforcement member in a chassis or frame.

Xylene

A chemical solvent (C8H11) used to remove grease and paint.